This standard specifies the method for the determination of protein in food. This standard applies to the determination of protein in food. This standard does not apply to the determination of foods with added inorganic nitrogen-containing substances and organic non-protein nitrogen-containing substances. The detection limit of the second method of this standard is 0.070μg/Ml; the linear range is 0~10.0μg/Ml.
GB/T 5009.5-2003 history
2016GB 5009.85-2016 Determination of Vitamin B in Food Safety National Standard Food
2016GB 5009.75-2014 Determination of Lead in Food Additives in National Food Safety Standards
2003GB/T 5009.55-2003 Method for analysis of hygienic standard of sugars